Susan,
I don't have any information on your particular question, but can share my
own experience. Keeping in mind that stress and fatigue can trigger asthma
attacks, I used to wheeze while breastfeeding, but only in the evening when
I was tired. During the night, and earlier in the day it was no problem.
We never did figure out any other trigger than fatigue.
Margaret K.K. Radcliffe [log in to unmask]
Dept. of Mining & Minerals Engr.
Virginia Tech, Blacksburg, VA